Ventilation system, indoor air quality, and health outcomes in parisian modern office workers.

A cross-sectional study was carried out to determine the effect on health of exposure to different types of ventilation, taking indoor environmental measurements (ITEMS) of major contaminants and aeroallergens into account.

Three buildings ventilated with heating, ventilating, and air conditioning (HVAC), fan coil units (FCUs), and natural ventilation were selected.

Studying the potential effects of environmental contaminants and aeroallergens on health outcomes, taking the floor and type of ventilation into account, did not explain the observed excess of nonspecific symptoms.